MySQL uninstall is really a headache, many times can not be completely uninstalled, this will cause us to reinstall the new MySQL.
The following describes, under the WINDOWS10 system, how to completely remove the uninstall MySQL ...
1 "Stop MySQL Service
Start-"All Apps-" Windows Management Tools-"service, stop the MySQL service.
2 "Uninstalling MySQL server
Control Panel \ All Control Panel items \ Programs and features, uninstall MySQL server.
3. Remove the MySQL folder from the MySQL installation directory (my installation directory is C:\Program Files (x86) \mysql)
4. Run the "regedit" file to open the registry
Delete the hkey_local_machine\system\controlset001\services\eventlog\application\mysql folder.
Delete the Hkey_local_machine\system\controlset002\services\eventlog\application\mysql folder.
Delete the Hkey_local_machine\system\currentcontrolset\services\eventlog\application\mysql folder.
If you do not have the appropriate folder, you do not have to delete it.
5 " Delete the" C:\ProgramData\MySQL "folder under C , if you can't delete it, use 360 to smash it down.
the ProgramData file is hidden by default and is visible after the settings are displayed, or directly copy the C:\ProgramData to the address bar to enter! Remove the entire MySQL folder ...
6 "All Apps-" Windows Management tools-"service
if MySQL has been uninstalled, but through the start-all apps-Windows management Tools-services "to see that the MySQL service still remains in system Services. I do not want to change the service name, how to do it.
Simply enter a command in CMD to delete the service:
SC Delete MySQL//Here's MySQL is the service name you want to delete
The service is then deleted.
Then, you can reload the MySQL database!!!
Reference article: http://www.jb51.net/article/118052.htm
How to remove MySQL completely